| Event | Rank | Mark | By | Meet |
| B-400 | 245 | 51.49 | Davis, Elgin (2015) (Boca Raton, FL) | Southridge Spartan Invitational(FL), 2015-02-28(#15) |
| B-400 | 245 | 51.49 | Flemings, Devonte (2015) (Rickards, FL) | FSU Relays - Friday(FL), 2015-03-26(#12) |
| B-400 | 245 | 51.49 | Moore, Brenden (Space Coast, FL) | FL 2A District 13(FL), 2015-04-16(#4) |
| B-400 | 248 | 51.50 | Bodie, Valentino (2015) (Bishop Michael Eldon School, FL) | Southridge Spartan Invitational(FL), 2015-02-28(#16) |
| B-400 | 249 | 51.51 | Friis, Christian (2016) (South Walton, FL) | Seahawks Open(FL), 2015-02-14(#2) |
| B-400 | 250 | 51.52 | Rain, Griffin (2016) (Jesuit, FL) | Jesuit Tri Meet 2(FL), 2015-02-24(#1) |
| B-400 | 250 | 51.52 | Scheuneman, Ryan (43) (Oakleaf, FL) | FL 3A District 4(FL), 2015-04-14(#3) |
| B-400 | 250 | 51.52 | Tillman, Wayne (2016) (Coral Springs, FL) | FL 4A District 12(FL), 2015-04-14(#6) |
| B-400 | 250 | 51.52 | Sylvester, Latavies (2018) (Mainland, FL) | FL 3A Region 2(FL), 2015-04-22(#7) |
| B-400 | 254 | 51.53 | Defense, Hasan (2015) (Ed White, FL) | FL 3A District 3(FL), 2015-04-14(#3) |
| B-400 | 255 | 51.54 | Gruber, Jonathan (2016) (Western, FL) | Miramar Relays(FL), 2015-03-28(#6) |
| B-400 | 255 | 51.54 | Sanchez, Juan (Ferguson, FL) | Belen Unlimited(FL), 2015-04-01(#1) |
| B-400 | 257 | 51.55 | Napier, Connie (2016) (Pembroke Pines Charter, FL) | Miramar Relays(FL), 2015-03-28(#7) |
| B-400 | 257 | 51.55 | Peter, Justin (2017) (Leon, FL) | USATF JO Region 16 Qualifier(FL), 2015-07-12(#7) |
| B-400 | 259 | 51.56 | Taylor, Tre'On (2016) (Winter Park, FL) | FL 4A District 4(FL), 2015-04-16(#11) |
| B-400 | 260 | 51.57 | Cabral, Joseph (2015) (Pine Crest, FL) | Pine Crest Finale(FL), 2015-04-02(#1) |
| B-400 | 260 | 51.57 | Hughes, Jon (2015) (Hillsborough, FL) | Jesuit Tri Meet 2(FL), 2015-02-24(#2) |
| B-400 | 260 | 51.57 | Heinstkill, Jason (2017) (American Heritage, FL) | Southridge Spartan Invitational(FL), 2015-02-28(#17) |
| B-400 | 263 | 51.58 | Reynolds, Lance (2017) (Viera, FL) | FL 4A Region 3(FL), 2015-04-22(#10) |
| B-400 | 264 | 51.59 | Volmar, Johns (2016) (Freedom, FL) | Osceola Kowboy Invitational(FL), 2015-03-14(#10) |
| B-400 | 264 | 51.59 | Forbes, Leander (2017) (Leon, FL) | FSU Relays - Friday(FL), 2015-03-26(#13) |
| B-400 | 266 | 51.60 | Cesalien, Olesson (Evans, FL) | Lake Brantley Developmental Meet 3(FL), 2015-03-25(#1) |
| B-400 | 267 | 51.61 | Hancock, Malik (2016) (Edgewater, FL) | Brian Jaeger Elite Classic(FL), 2015-03-14(#10) |
| B-400 | 267 | 51.61 | Jean, Josias (2017) (Fort Myers, FL) | AAU JO Region 9 Qualifier - Naples(FL), 2015-06-28(#6) |
| B-400 | 269 | 51.62 | Carrie, Andrew (2015) (Westminster Academy, FL) | CCA Eagles Invitational(FL), 2015-03-13(#1) |
| B-400 | 269 | 51.62 | Melendez, William (2015) (Bartram Trail, FL) | FL 3A District 4(FL), 2015-04-14(#6) |
| B-400 | 269 | 51.62 | Walker, Collin (2015) (Episcopal, FL) | FL 2A Region 1(FL), 2015-04-21(#12) |
| B-400 | 272 | 51.63 | Warburton, Colvin (2016) (First Baptist, FL) | FL 1A Region 3(FL), 2015-04-23(#2) |
| B-400 | 272 | 51.63 | Barnes, Abraham (2015) (Chiles, FL) | Golden South Classic(FL), 2015-05-23(#2) |
| B-400 | 274 | 51.64 | Shepherd, Daniel (2016) (King's Academy, FL) | Westminster Academy Home Meet 1(FL), 2015-02-28(#1) |
| B-400 | 274 | 51.64 | Wampler, Maxwell (2016) (Gulf Coast, FL) | FL 3A District 12(FL), 2015-04-11(#4) |
| B-400 | 276 | 51.65 | Cheathem, Robert (Bishop Moore, FL) | Astronaut Invitational(FL), 2015-03-20(#2) |
| B-400 | 277 | 51.66 | Outlaw, Marquise (2015) (Dunbar, FL) | Lee County Athletic Association(FL), 2015-03-21(#2) |
| B-400 | 277 | 51.66 | Jacques-Louis, Shy (2018) (Lehigh, FL) | Lee County Athletic Association(FL), 2015-03-21(#1) |
| B-400 | 279 | 51.67 | Wallace, Terrye (2015) (University Christian , FL) | FL 1A Region 1(FL), 2015-04-24(#4) |
| B-400 | 280 | 51.69 | Howell, Melvin (2017) (Fort Lauderdale, FL) | FL 4A District 13(FL), 2015-04-15(#7) |
| B-400 | 281 | 51.71 | Adams, Qeandre (Booker T. Washington, FL) | Steven Garst Invitational(FL), 2015-02-28(#4) |
| B-400 | 282 | 51.72 | Arrieta, Samuel (Lake Brantley, FL) | Seminole Athletic Conference Championships(FL), 2015-03-12(#5) |
| B-400 | 283 | 51.73 | Allen, Lorenz (2016) (Manatee, FL) | FL 4A District 8(FL), 2015-04-16(#2) |
| B-400 | 284 | 51.76 | Paul, Brian (2015) (Atlantic, FL) | Suncoast Invite #2(FL), 2015-03-10(#2) |
| B-400 | 285 | 51.77 | Durrant, Trevor (2015) (North Port, FL) | Sarasota County Championships(FL), 2015-04-02(#2) |
| B-400 | 285 | 51.77 | Novak, Daniel (Cocoa Beach, FL) | FL 2A District 13(FL), 2015-04-16(#4) |
| B-400 | 287 | 51.78 | Wallace, Rayshard (Blanche Ely, FL) | Bill Wilson Invitational(FL), 2015-03-14(#4) |
| B-400 | 287 | 51.78 | Cameron, Isaiah (2015) (Alonso, FL) | FL 4A District 6(FL), 2015-04-15(#3) |
| B-400 | 287 | 51.78 | Reid, Donovan (2016) (Englewood, FL) | FL 3A District 3(FL), 2015-04-14(#4) |
| B-400 | 290 | 51.79 | Adolphson, Alex (2016) (Countryside, FL) | Calvary Invitational(FL), 2015-03-06(#3) |
| B-400 | 290 | 51.79 | Shelton, Robby (2016) (West Port, FL) | FL 4A District 3(FL), 2015-04-16(#5) |
| B-400 | 290 | 51.79 | Ballash, Brad (2015) (Seabreeze, FL) | FL 3A Region 2(FL), 2015-04-22(#6) |
| B-400 | 293 | 51.80 | Augustine, Cj (Berkeley Prep, FL) | IMG Invitational(FL), 2015-03-14(#5) |
| B-400 | 293 | 51.80 | Fejes, Jeffery (2017) (Venice, FL) | FL 3A District 10(FL), 2015-04-15(#2) |
| B-400 | 293 | 51.80 | Williams, Holly (2017) (Lincoln, FL) | FL 3A District 3(FL), 2015-04-14(#5) |
| B-400 | 293 | 51.80 | Vieux, Andy (Miami Gardens, FL) | USATF JO Region 16 Qualifier(FL), 2015-07-12(#7) |
| B-400 | 297 | 51.81 | Stevens, Solomon (2016) (Rickards, FL) | FSU Relays - Friday(FL), 2015-03-26(#16) |
| B-400 | 298 | 51.82 | Fearrington, Kyle (2016) (East Lake, FL) | Pinellas County Athletic Conference (FL), 2015-03-26(#3) |
| B-400 | 298 | 51.82 | Eyma, Elijah (2016) (Lake Mary Prep, FL) | FL 1A Region 2(FL), 2015-04-23(#5) |
| B-400 | 300 | 51.83 | Lampley, Christoph (2015) (Countryside, FL) | FL 4A District 8(FL), 2015-04-16(#1) |
| B-400 | 301 | 51.84 | Lemon, Christopher (2015) (Seminole, FL) | Seminole Open(FL), 2015-02-21(#4) |
| B-400 | 301 | 51.84 | Williams, Julian (2016) (Columbus, FL) | FL 4A District 16(FL), 2015-04-11(#4) |
| B-400 | 303 | 51.86 | Wright, Justin (2016) (St. Thomas Aquinas, FL) | Louie Bing Classic(FL), 2015-02-21(#15) |
| B-400 | 303 | 51.86 | Figgins, Jasean (2015) (George M. Steinbrenner, FL) | Steinbrenner Invitational(FL), 2015-03-21(#13) |
| B-400 | 303 | 51.86 | Mclean, Mark-Anthony (2016) (Miami Carol City, FL) | FL 3A District 16(FL), 2015-04-14(#11) |
| B-400 | 306 | 51.87 | Givens, Demareyae (Palatka, FL) | St. John's River County Championships(FL), 2015-04-01(#5) |
| B-400 | 307 | 51.90 | Ware, David (2015) (Dillard, FL) | BCAA South Qualifier(Fl), 2015-03-18(#7) |
| B-400 | 307 | 51.90 | Osinga, Jonathan (2015) (North Port, FL) | Wally Keller Invitational(FL), 2015-03-28(#2) |
| B-400 | 307 | 51.90 | Baclig, Jeremiah (2018) (Paxon, FL) | Wolfpack Classic(FL), 2015-03-27(#2) |
| B-400 | 307 | 51.90 | Tillman, Randy (2015) (Creekside, FL) | Craig Speziale Sprint/Hurdle/Field Event(FL), 2015-04-03(#1) |
| B-400 | 311 | 51.91 | Weaver, Julius (2016) (Miami Northwestern, FL) | Hallandale Invitational(FL), 2015-03-07(#17) |
| B-400 | 312 | 51.92 | Turner, Kevin (2015) (American, FL) | Hallandale Invitational(FL), 2015-03-07(#18) |
| B-400 | 313 | 51.95 | Mucciaccio, James (Pompano Beach, FL) | Southridge Spartan Invitational(FL), 2015-02-28(#18) |
| B-400 | 313 | 51.95 | Mckinney, Davis (2015) (Fort Walton Beach, FL) | Steven Garst Invitational(FL), 2015-02-28(#7) |
| B-400 | 313 | 51.95 | Williams, Bernard (2016) (Edgewater, FL) | FL 3A District 6(FL), 2015-04-16(#3) |
| B-400 | 316 | 51.96 | Hill, Dawson (2018) (South Plantation, FL) | BCAA South Qualifier(Fl), 2015-03-18(#8) |
| B-400 | 316 | 51.96 | Jackson, Nicholas (2015) (Suncoast , FL) | FL 3A District 13(FL), 2015-04-15(#2) |
| B-400 | 316 | 51.96 | Odom, Eric (2015) (Robert E. Lee, FL) | FL 3A District 3(FL), 2015-04-14(#6) |
| B-400 | 319 | 51.99 | Louis, Donarson (Fort Pierce Westwood, FL) | St. Lucie County Championships(FL), 2015-03-20(#1) |
| B-400 | 319 | 51.99 | Waldon, Tuquan (2015) (Tenoroc, FL) | Polk County Championships(FL), 2015-03-21(#3) |
| B-400 | 321 | 52.00 | Drenga, Ryan (Space Coast, FL) | FL 2A District 13(FL), 2015-04-16(#5) |
| B-400 | 321 | 52.00 | Berg, Michael (2015) (Nature Coast, FL) | FL 2A Region 2(FL), 2015-04-23(#7) |
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